I know that most people don't even try to do technical or fundamental analysis before buying, that's because most people buy in the belief that since the price is very low, then if they buy the price will go up a lot and with that they will get a lot of profit, but the problem with this thought is that nothing guarantees that the price will go up a lot in the future, it may be that the price drops a lot and does not go up much for long and long years and the person can run the risk of staying 5 or 7 years just waiting for the price to recover, and then you will have to wait for more years waiting for the price to go up a lot to make a profit
True TA and FA for Bitcoin is too insane to understand so normal people are just looking at the chart and check cycles. Now that Bitcoin 4 year cycle isn't a mystery, most people who buy bitcoin don't have to do TA calculation and besides, Bitcoin fundamental is somehow established so yeah, looking at the chart can do and check where is Bitcoin price at the moment.
By that I mean that it is more prudent for people to try to do some analysis to see if there is a trend reversal from high to low before buying bitcoin, and not creating high confidence that the price will always go up even if years pass, so it might not happen either, OP I hope your strategy yields profits in the future
If one is holding Bitcoin for a long term, buying at its dip does not need any indepth calculation. Considering the current market, many people thinks that just by holding BTC until 2025 can bring them profit in reference of the Bitcoin halving and 4 year cycle.